WO2018126510A1 - Substrat en réseau et dispositif d'affichage - Google Patents

Substrat en réseau et dispositif d'affichage Download PDF

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Publication number
WO2018126510A1
WO2018126510A1 PCT/CN2017/073344 CN2017073344W WO2018126510A1 WO 2018126510 A1 WO2018126510 A1 WO 2018126510A1 CN 2017073344 W CN2017073344 W CN 2017073344W WO 2018126510 A1 WO2018126510 A1 WO 2018126510A1
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WIPO (PCT)
Prior art keywords
thin film
film transistor
pixel region
sub
capacitor
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PCT/CN2017/073344
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English (en)
Chinese (zh)
Inventor
安立扬
Original Assignee
深圳市华星光电技术有限公司
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Priority to US15/513,590 priority Critical patent/US20180231851A1/en
Publication of WO2018126510A1 publication Critical patent/WO2018126510A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136286—Wiring, e.g. gate line, drain line
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3622—Control of matrices with row and column drivers using a passive matrix
    • G09G3/3629—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals
    • G09G3/364—Control of matrices with row and column drivers using a passive matrix using liquid crystals having memory effects, e.g. ferroelectric liquid crystals with use of subpixels
    • G—PHYSICS
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    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3655—Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G09G3/3659—Control of matrices with row and column drivers using an active matrix the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
    • G02F1/134354—Subdivided pixels, e.g. for grey scale or redundancy the sub-pixels being capacitively coupled
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0443—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations
    • G09G2300/0447—Pixel structures with several sub-pixels for the same colour in a pixel, not specifically used to display gradations for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to an array substrate and a display device.
  • Liquid crystal display Liquid Crystal Display
  • LCD and other flat display devices are widely used in mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, etc. due to their high image quality, power saving, thin body and wide application range.
  • Various consumer electronic products have become the mainstream in display devices.
  • Most of the liquid crystal display devices on the market are backlight type liquid crystal displays, which include a liquid crystal display panel (TFT-LCD) and a backlight module (backlight) Module). LCD on the current mainstream market
  • TFT-LCD liquid crystal display panel
  • backlight backlight module
  • LCD liquid crystal display panel
  • the VA type liquid crystal display panel has a very high contrast ratio compared to other types of liquid crystal display panels, and has a very wide application in large-size display such as a television.
  • the VA type liquid crystal display panel adopts a vertically rotating liquid crystal
  • the difference in birefringence of the liquid crystal molecules is relatively large, resulting in color shift at a large viewing angle (color The shift problem is more serious, which makes the VA type liquid crystal display panel have a large difference in brightness from different angles, resulting in picture distortion.
  • the design shown in FIG. 2 is generally adopted, and the entire display unit is divided into a main-pixel (main pixel) 10 and a sub-pixel (sub-pixel) 20, which are respectively separated by two TFT devices. control.
  • the two TFTs are controlled by the same G-line (gate line).
  • the D-line (data line) charges the main-pixel and the sub-pixel, and the potential of the main-pixel remains as the signal given by the D-line.
  • the liquid crystal molecules have two alignment directions in the same gray scale, and can play the role of viewing angle compensation when viewed from a large viewing angle, so as to achieve the purpose of improving the large viewing angle.
  • the improvement effect of the design is limited, and there is still a large color shift phenomenon in the middle and low gray levels.
  • An object of the present invention is to provide an array substrate and a display device to solve the problem that the VA liquid crystal display panel adopts vertically rotating liquid crystal in the prior art, and the difference in birefringence of liquid crystal molecules is relatively large, resulting in color shift problem under a large viewing angle. More serious, the VA type liquid crystal display panel sees a large difference in brightness from different angles, causing a problem of picture distortion.
  • An array substrate comprising: a plurality of gate lines, a plurality of data lines, and a plurality of pixel units formed by crossing the plurality of gate lines and the plurality of data lines, each of the pixel units including a horizontal a main pixel area, a first sub-pixel area, and a second sub-pixel area arranged in sequence;
  • N be a positive integer, one of the pixel units being respectively connected to the gate lines of the Nth and N+1th lines, and when the Nth gate line is turned on, the data line is opposite to the main pixel area
  • the first sub-pixel region and the second sub-pixel region are charged.
  • the gate line of the (N+1)th column is turned on, the main pixel region, the first sub-pixel region, and the second Capacitive coupling may occur inside the sub-pixel region such that potentials of the main pixel region, the first sub-pixel region, and the second sub-pixel region are different from each other.
  • the main pixel region includes a first thin film transistor
  • the first sub-pixel region includes a second thin film transistor
  • the second sub-pixel region includes a third thin film transistor
  • the first thin film transistor the The second thin film transistor is connected to the gate of the third thin film transistor and is connected only to the Nth gate line.
  • the second sub-pixel region further includes a fourth thin film transistor, and the gate of the fourth thin film transistor is connected and only the N+1th gate line is connected.
  • the sources of the first thin film transistor, the second thin film transistor and the third thin film transistor are all connected to the same data line, and the drains of the first thin film transistors are respectively connected with the first a liquid crystal capacitor and a first storage capacitor, a drain of the second thin film transistor is respectively connected with a second liquid crystal capacitor and a second storage capacitor, and a drain of the third thin film transistor is respectively connected with a third liquid crystal capacitor and a third storage capacitance.
  • a second capacitor is disposed between a drain of the first thin film transistor and a drain of the second thin film transistor, and a drain of the fourth thin film transistor and a drain of the third thin film transistor A first capacitor is disposed therebetween, and a source of the fourth thin film transistor is connected to a drain of the second thin film transistor.
  • the data line is opposite to the first liquid crystal capacitor, the first storage capacitor, the second liquid crystal capacitor, the second storage capacitor, and the first The three liquid crystal capacitors, the third storage capacitor, the first capacitor, and the second capacitor are charged, and when the gate line of the (N+1)th column is turned on, the first capacitor and the second storage capacitor a capacitive coupling with the second liquid crystal capacitor, the second capacitor capacitively coupling with the first storage capacitor and the first liquid crystal capacitor, such that the main pixel region and the first sub-pixel region And the potentials of the second sub-pixel regions are different from each other.
  • the data line commonly connected to the first thin film transistor, the second thin film transistor and the third thin film transistor is located between the main pixel region and the first sub-pixel region.
  • one end of the first storage capacitor, the second storage capacitor and the third storage capacitor are connected to a common electrode.
  • one end of the first liquid crystal capacitor, the second liquid crystal capacitor and the third liquid crystal capacitor are grounded.
  • a display device includes an array substrate, the array substrate comprising:
  • each of the pixel units including a main pixel area sequentially arranged in a horizontal direction, a first sub-pixel region and a second sub-pixel region;
  • N be a positive integer, one of the pixel units being respectively connected to the gate lines of the Nth and N+1th lines, and when the Nth gate line is turned on, the data line is opposite to the main pixel area
  • the first sub-pixel region and the second sub-pixel region are charged.
  • the gate line of the (N+1)th column is turned on, the main pixel region, the first sub-pixel region, and the second Capacitive coupling may occur inside the sub-pixel region such that potentials of the main pixel region, the first sub-pixel region, and the second sub-pixel region are different from each other.
  • the main pixel region comprises a first thin film transistor
  • the first sub-pixel region comprises a second thin film transistor
  • the second sub-pixel region comprises a third thin film transistor
  • the first thin film transistor The second thin film transistor is connected to the gate of the third thin film transistor and only the Nth gate line is connected.
  • the second sub-pixel region further includes a fourth thin film transistor, and the gate of the fourth thin film transistor is connected and only the N+1th gate line is connected.
  • the sources of the first thin film transistor, the second thin film transistor and the third thin film transistor are all connected to the same data line, and the drains of the first thin film transistors are respectively connected to the first a liquid crystal capacitor and a first storage capacitor, a drain of the second thin film transistor is respectively connected with a second liquid crystal capacitor and a second storage capacitor, and a drain of the third thin film transistor is respectively connected with a third liquid crystal capacitor and a third Storage capacitor.
  • a second capacitor is disposed between a drain of the first thin film transistor and a drain of the second thin film transistor, a drain of the fourth thin film transistor and a drain of the third thin film transistor
  • a first capacitor is disposed between the source of the fourth thin film transistor and a drain of the second thin film transistor.
  • the data line is opposite to the first liquid crystal capacitor, the first storage capacitor, the second liquid crystal capacitor, the second storage capacitor, The third liquid crystal capacitor, the third storage capacitor, the first capacitor, and the second capacitor are charged, and when the gate line of the (N+1)th column is turned on, the first capacitor and the second storage a capacitive coupling between the capacitor and the second liquid crystal capacitor, the second capacitor capacitively coupling with the first storage capacitor and the first liquid crystal capacitor, such that the main pixel region and the first sub-pixel The potentials of the region and the second sub-pixel region are different from each other.
  • the data line in which the first thin film transistor, the second thin film transistor and the third thin film transistor are commonly connected is located between the main pixel region and the first sub-pixel region.
  • one end of the first storage capacitor, the second storage capacitor and the third storage capacitor are connected to a common electrode.
  • one end of the first liquid crystal capacitor, the second liquid crystal capacitor and the third liquid crystal capacitor are grounded.
  • An array substrate and a display device of the present invention divide a pixel unit into a main pixel region, a first sub-pixel region, and a second sub-pixel region, and cause the main pixel region and the
  • the potentials of the first sub-pixel region and the second sub-pixel region are different from each other, and the VA liquid crystal display panel adopts vertically rotating liquid crystal in the prior art, and the difference in birefringence of the liquid crystal molecules is relatively large, resulting in a large viewing angle.
  • the color shift problem under the above is more serious, which makes the VA type liquid crystal display panel have a large difference in brightness from different angles, causing a problem of picture distortion.
  • FIG. 1 is a schematic overall structural diagram of a pixel unit of an array substrate according to an embodiment of the invention.
  • FIG. 2 is a schematic view showing the overall structure of a pixel unit of an array substrate in the prior art.
  • the basic principle of the present invention is that by dividing each pixel unit into three portions insulated from each other, one portion is the main pixel region 100, and the remaining two portions are the first sub-pixel region 200 and the second sub-pixel region 300. Then, by inputting the same voltage to the main pixel region 100, the first sub-pixel region 200, and the second sub-pixel region 300, respectively, the voltages of the three mutually insulated pixel regions are different from each other by capacitive coupling. Further, the liquid crystal deflection angles of the respective pixel regions are different, thereby realizing color shift compensation for a large viewing angle of the liquid crystal display panel.
  • FIG. 1 is a schematic view showing the overall structure of a pixel unit of an array substrate according to an embodiment of the present invention.
  • an array substrate of the present invention includes:
  • each of the pixel units including the horizontal direction
  • N be a positive integer, one of the pixel units being respectively connected to the gate lines Gate of the Nth and N+1th strips, and when the Nth gate line Gate is turned on, the data line Data is The main pixel region 100, the first sub-pixel region 200, and the second sub-pixel region 300 are charged.
  • the gate line Gate of the N+1th column is turned on, the main pixel region 100, the first Capacitive coupling may occur in the interior of the sub-pixel region 200 and the second sub-pixel region 300 such that the potentials of the main pixel region 100, the first sub-pixel region 200, and the second sub-pixel region 300 are not mutually the same.
  • each of the pixel units is as follows:
  • the main pixel region 100 includes a first thin film transistor T1, the first sub-pixel region 200 includes a second thin film transistor T2, the second sub-pixel region 300 includes a third thin film transistor T3, and the first thin film transistor T1, the second thin film transistor T2 and the gate of the third thin film transistor T3 are both connected to each other and only the Nth gate line Gate is connected.
  • the second sub-pixel region 300 further includes a fourth thin film transistor T4 whose gate is connected and connected only to the N+1th gate line Gate.
  • the sources of the first thin film transistor T1, the second thin film transistor T2, and the third thin film transistor T3 are both connected to the same data line Data, and the first thin film transistor T1
  • the drain is connected to the first liquid crystal capacitor Clc1 and the first storage capacitor Cst1
  • the drain of the second thin film transistor T2 is respectively connected to the second liquid crystal capacitor Clc2 and the second storage capacitor Cst2, and the third thin film transistor T3
  • the drains are respectively connected with a third liquid crystal capacitor Clc3 and a third storage capacitor Cst3.
  • a second capacitor Cb is disposed between the drain of the first thin film transistor T1 and the drain of the second thin film transistor T2, and the drain of the fourth thin film transistor T4 and the third thin film transistor T3
  • a first capacitor Ca is disposed between the drains, and a source of the fourth thin film transistor T4 is connected to a drain of the second thin film transistor T2.
  • the data line Data in which the first thin film transistor T1, the second thin film transistor T2 and the third thin film transistor T3 are commonly connected are located in the main pixel region 100 and the first Between the sub-pixel regions 200, preferably, the first storage capacitor Cst1, the second storage capacitor Cst2, and one end of the third storage capacitor Cst3 are connected to a common electrode, preferably the first liquid crystal capacitor Clc1. Both ends of the second liquid crystal capacitor Clc2 and the third liquid crystal capacitor Clc3 are grounded.
  • the data line Data is opposite to the first liquid crystal capacitor Cl1, the first storage capacitor Cst1, the second liquid crystal capacitor Clc2, and the second storage capacitor Cst2.
  • the third liquid crystal capacitor Clc3, the third storage capacitor Cst3, the first capacitor Ca, and the second capacitor Cb are charged while the one end capacitor plate of the first capacitor Ca is connected to the third thin film transistor T3 ( That is, the lower end plate) collects a part of the electric charge, and the capacitive plates at both ends of the second capacitance Cb gather a part of the electric charge.
  • the gate line Gate of the (N+1)th column When the gate line Gate of the (N+1)th column is turned on, the gate line Gate of the Nth column is turned off, and the first capacitor Ca is capacitively coupled with the second storage capacitor Cst2 and the second liquid crystal capacitor Clc2.
  • the effect is that the potential of the upper end plate of the first capacitor Ca is lower, and the potential of the upper end plate of the second liquid crystal capacitor Clc2 and the second storage capacitor Cst2 (connected to the drain of the second thin film transistor T2) is higher.
  • the charges of the upper end plates of the second liquid crystal capacitor Clc2 and the second storage capacitor Cst2 are transferred to the upper end plate of the first capacitor Ca, so that the overall potential of the first sub-pixel region 200 is lowered, and the second sub-pixel region 300 is made The overall potential rises.
  • the second capacitor Cb is capacitively coupled to the first storage capacitor Cst1 and the first liquid crystal capacitor Clc1, that is, a partial charge transfer of the upper storage plate Cst2 and the upper end plate of the second liquid crystal capacitor Clc2 After the first capacitor Ca, its potential drops, and then the partial charge of the second capacitor Cb is transferred to the second storage capacitor Cst2 and the second liquid crystal capacitor Clc2, causing the potential of the second capacitor Cb to drop. This in turn causes a drop in the potential of the main pixel region 100.
  • the potentials of the main pixel region 100, the first sub-pixel region 200, and the second sub-pixel region 300 are different from each other.
  • An array substrate of the present invention divides a pixel unit into a main pixel region 100, a first sub-pixel region 200, and a second sub-pixel region 300, and causes a capacitive coupling effect to cause the main pixel region 100 and the
  • the potentials of the first sub-pixel region 200 and the second sub-pixel region 300 are different from each other, and the VA liquid crystal display panel adopts vertically rotating liquid crystal in the prior art, and the difference in birefringence of the liquid crystal molecules is relatively large.
  • the color shift problem under the large viewing angle is relatively serious, which makes the VA type liquid crystal display panel have a large difference in brightness from different angles, causing a problem of picture distortion.
  • a display device of the present embodiment includes the array substrate according to the first embodiment.
  • the array substrate has been discussed in detail in the first embodiment, and the description thereof will not be repeated.
  • a display device of the present invention divides a pixel unit of an array substrate into a main pixel region 100, a first sub-pixel region 200, and a second sub-pixel region 300, and causes the main pixel by capacitive coupling.
  • the potentials of the region 100, the first sub-pixel region 200 and the second sub-pixel region 300 are different from each other, and the VA liquid crystal display panel adopts vertically rotating liquid crystal, and the liquid crystal molecules have birefringence.
  • the difference is relatively large, resulting in a serious color shift problem under a large viewing angle, which makes the VA type liquid crystal display panel have a large difference in brightness from different angles, causing a problem of picture distortion.

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Abstract

L'invention concerne un substrat en réseau et un dispositif d'affichage. Le substrat en réseau comprend de multiples lignes de grille (Gate(n)), de multiples lignes de données (Data(n)) et de multiples unités de pixels. Chaque unité de pixel est connectée à la Nième ligne de grille (Gate(n)) et à la (N+1)ième ligne de grille (Gate(n+1)). Lorsque la Nième ligne de grille (Gate(n)) est activée, la ligne de données (Data(n)) charge une zone de pixel principale (100), une première sous-zone de pixel (200) et une seconde sous-zone de pixel (300). Lorsque la (N+1)ième ligne de grille (grille (n +1)) est activée, l'effet de couplage capacitif est obtenu à l'intérieur de la zone de pixel principale (100), de la première sous-zone de pixel (200) et de la seconde sous-zone de pixel (300), amenant des potentiels électriques de la zone de pixel principale (100), de la première sous-zone de pixel (200) et de la seconde sous-zone de pixel (300) à être différents l'un de l'autre, et améliorant ainsi l'effet d'affichage à des angles de visualisation importants.
PCT/CN2017/073344 2017-01-03 2017-02-13 Substrat en réseau et dispositif d'affichage WO2018126510A1 (fr)

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CN107643639A (zh) * 2017-10-25 2018-01-30 深圳市华星光电技术有限公司 一种像素结构、阵列基板及显示面板
CN109119038A (zh) * 2018-09-03 2019-01-01 惠科股份有限公司 一种显示面板和显示装置
CN110660371B (zh) * 2019-09-30 2021-08-10 海信视像科技股份有限公司 液晶模组显示修正方法及设备
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